A single gene has been identified as the 'master switch' for nearly all physical sensation, including touch, heat, and pain.
April 1, 2026
Original Paper
Mouse behavioral genomics identifies Creld1 as a gatekeeper of somatosensation
bioRxiv · 10.64898/2026.03.30.715210
The Takeaway
While we usually think of different nerves for different feelings, deleting the Creld1 gene in mice completely turned off their ability to sense touch, temperature, pain, and even itch. Overexpressing the gene made them hypersensitive, marking it as a universal gatekeeper of how we feel the world.
From the abstract
Somatosensation enables the perception of touch, temperature, pain, and itch. These sensory modalities are mediated by primary sensory neurons in the dorsal root ganglion (DRG), which convert physical and chemical stimuli into electrical signals using specialized molecular sensors, including the touch sensor PIEZO2 (Ref1,2) and temperature sensors such as TRPV1 (Ref3,4), coupled with downstream voltage-gated sodium channels (Nav) like Nav1.7 (Ref5,6). However, the full repertoire of molecular co